Toothed drum type oil recovery device

Abstract

Provided is a toothed drum type oil recovery device, which includes: a recovery drum having a center coupled to a rotary shaft and having a plurality of tooth units formed around an outer circumference thereof, wherein one side of the recovery drum is disposed in the water to which oil is spilled so that the oil is recovered by the tooth unit at one side of the recovery drum according to the rotation; and a separation unit containing an oil separating liquid and disposed at the other side of the recovery drum, wherein when the tooth unit moves onto the oil separating liquid at the other side of the recovery drum according to the rotation of the recovery drum, the oil separating liquid is introduced into a space between the tooth units adjacent to each other by means of a capillary action to separate the oil from the tooth unit.

What is claimed is: 
     
       1. A toothed drum type oil recovery device, comprising:
 a recovery drum having a center coupled to a rotary shaft to rotate together with the rotary shaft and having a plurality of tooth units formed around an outer circumference thereof, wherein one side of the recovery drum is disposed in the water to which oil is spilled so that the oil is recovered by the tooth unit at one side of the recovery drum according to the rotation; and 
 a separation unit containing an oil separating liquid and disposed at a other side of the recovery drum, wherein when the tooth unit moves onto the oil separating liquid at the other side of the recovery drum according to the rotation of the recovery drum, the oil separating liquid is introduced into a space between the tooth units adjacent to each other by means of a capillary action to separate the oil from the tooth unit. 
 
     
     
       2. The toothed drum type oil recovery device according to  claim 1 ,
 wherein the tooth unit is made of a hydrophilic material, and the oil separating liquid is water. 
 
     
     
       3. The toothed drum type oil recovery device according to  claim 2 ,
 wherein the tooth unit is made of a porous material that absorbs water therein. 
 
     
     
       4. The toothed drum type oil recovery device according to  claim 2 ,
 wherein a nanostructure having at least one shape selected from the group consisting of nano-hair, nano-fiber, nano-pillar, nano-rod and nano-wire shapes is formed on a surface of the tooth unit. 
 
     
     
       5. The toothed drum type oil recovery device according to  claim 1 ,
 wherein the tooth unit is formed so that a front inclination angle of a front tooth surface thereof and a rear inclination angle of a rear tooth surface thereof are different from each other. 
 
     
     
       6. The toothed drum type oil recovery device according to  claim 1 ,
 wherein the tooth unit is formed to have a height of 1 mm to 6 mm and a width of 1 mm to 6 mm.